/* jshint -W117 */ // Jingle stuff JingleSession.prototype = Object.create(SessionBase.prototype); function JingleSession(me, sid, connection) { SessionBase.call(this, connection, sid); this.me = me; this.initiator = null; this.responder = null; this.isInitiator = null; this.peerjid = null; this.state = null; this.localSDP = null; this.remoteSDP = null; this.localStreams = []; this.relayedStreams = []; this.remoteStreams = []; this.startTime = null; this.stopTime = null; this.media_constraints = null; this.pc_constraints = null; this.ice_config = {}; this.drip_container = []; this.usetrickle = true; this.usepranswer = false; // early transport warmup -- mind you, this might fail. depends on webrtc issue 1718 this.usedrip = false; // dripping is sending trickle candidates not one-by-one this.hadstuncandidate = false; this.hadturncandidate = false; this.lasticecandidate = false; this.statsinterval = null; this.reason = null; this.wait = true; } JingleSession.prototype.initiate = function (peerjid, isInitiator) { var self = this; if (this.state !== null) { console.error('attempt to initiate on session ' + this.sid + 'in state ' + this.state); return; } this.isInitiator = isInitiator; this.state = 'pending'; this.initiator = isInitiator ? this.me : peerjid; this.responder = !isInitiator ? this.me : peerjid; this.peerjid = peerjid; this.hadstuncandidate = false; this.hadturncandidate = false; this.lasticecandidate = false; this.peerconnection = new TraceablePeerConnection( this.connection.jingle.ice_config, this.connection.jingle.pc_constraints ); this.peerconnection.onicecandidate = function (event) { self.sendIceCandidate(event.candidate); }; this.peerconnection.onaddstream = function (event) { self.remoteStreams.push(event.stream); $(document).trigger('remotestreamadded.jingle', [event, self.sid]); }; this.peerconnection.onremovestream = function (event) { // Remove the stream from remoteStreams var streamIdx = self.remoteStreams.indexOf(event.stream); if(streamIdx !== -1){ self.remoteStreams.splice(streamIdx, 1); } // FIXME: remotestreamremoved.jingle not defined anywhere(unused) $(document).trigger('remotestreamremoved.jingle', [event, self.sid]); }; this.peerconnection.onsignalingstatechange = function (event) { if (!(self && self.peerconnection)) return; }; this.peerconnection.oniceconnectionstatechange = function (event) { if (!(self && self.peerconnection)) return; switch (self.peerconnection.iceConnectionState) { case 'connected': this.startTime = new Date(); break; case 'disconnected': this.stopTime = new Date(); break; } $(document).trigger('iceconnectionstatechange.jingle', [self.sid, self]); }; // add any local and relayed stream this.localStreams.forEach(function(stream) { self.peerconnection.addStream(stream); }); this.relayedStreams.forEach(function(stream) { self.peerconnection.addStream(stream); }); }; JingleSession.prototype.accept = function () { var self = this; this.state = 'active'; var pranswer = this.peerconnection.localDescription; if (!pranswer || pranswer.type != 'pranswer') { return; } console.log('going from pranswer to answer'); if (this.usetrickle) { // remove candidates already sent from session-accept var lines = SDPUtil.find_lines(pranswer.sdp, 'a=candidate:'); for (var i = 0; i < lines.length; i++) { pranswer.sdp = pranswer.sdp.replace(lines[i] + '\r\n', ''); } } while (SDPUtil.find_line(pranswer.sdp, 'a=inactive')) { // FIXME: change any inactive to sendrecv or whatever they were originally pranswer.sdp = pranswer.sdp.replace('a=inactive', 'a=sendrecv'); } pranswer = simulcast.reverseTransformLocalDescription(pranswer); var prsdp = new SDP(pranswer.sdp); var accept = $iq({to: this.peerjid, type: 'set'}) .c('jingle', {xmlns: 'urn:xmpp:jingle:1', action: 'session-accept', initiator: this.initiator, responder: this.responder, sid: this.sid }); prsdp.toJingle(accept, this.initiator == this.me ? 'initiator' : 'responder'); var sdp = this.peerconnection.localDescription.sdp; while (SDPUtil.find_line(sdp, 'a=inactive')) { // FIXME: change any inactive to sendrecv or whatever they were originally sdp = sdp.replace('a=inactive', 'a=sendrecv'); } this.peerconnection.setLocalDescription(new RTCSessionDescription({type: 'answer', sdp: sdp}), function () { //console.log('setLocalDescription success'); $(document).trigger('setLocalDescription.jingle', [self.sid]); this.connection.sendIQ(accept, function () { var ack = {}; ack.source = 'answer'; $(document).trigger('ack.jingle', [self.sid, ack]); }, function (stanza) { var error = ($(stanza).find('error').length) ? { code: $(stanza).find('error').attr('code'), reason: $(stanza).find('error :first')[0].tagName, }:{}; error.source = 'answer'; $(document).trigger('error.jingle', [self.sid, error]); }, 10000); }, function (e) { console.error('setLocalDescription failed', e); } ); }; /** * Implements SessionBase.sendSSRCUpdate. */ JingleSession.prototype.sendSSRCUpdate = function(sdpMediaSsrcs, fromJid, isadd) { var self = this; console.log('tell', self.peerjid, 'about ' + (isadd ? 'new' : 'removed') + ' ssrcs from' + self.me); if (!(this.peerconnection.signalingState == 'stable' && this.peerconnection.iceConnectionState == 'connected')){ console.log("Too early to send updates"); return; } this.sendSSRCUpdateIq(sdpMediaSsrcs, self.sid, self.initiator, self.peerjid, isadd); }; JingleSession.prototype.terminate = function (reason) { this.state = 'ended'; this.reason = reason; this.peerconnection.close(); if (this.statsinterval !== null) { window.clearInterval(this.statsinterval); this.statsinterval = null; } }; JingleSession.prototype.active = function () { return this.state == 'active'; }; JingleSession.prototype.sendIceCandidate = function (candidate) { var self = this; if (candidate && !this.lasticecandidate) { var ice = SDPUtil.iceparams(this.localSDP.media[candidate.sdpMLineIndex], this.localSDP.session); var jcand = SDPUtil.candidateToJingle(candidate.candidate); if (!(ice && jcand)) { console.error('failed to get ice && jcand'); return; } ice.xmlns = 'urn:xmpp:jingle:transports:ice-udp:1'; if (jcand.type === 'srflx') { this.hadstuncandidate = true; } else if (jcand.type === 'relay') { this.hadturncandidate = true; } if (this.usetrickle) { if (this.usedrip) { if (this.drip_container.length === 0) { // start 20ms callout window.setTimeout(function () { if (self.drip_container.length === 0) return; self.sendIceCandidates(self.drip_container); self.drip_container = []; }, 20); } this.drip_container.push(event.candidate); return; } else { self.sendIceCandidate([event.candidate]); } } } else { //console.log('sendIceCandidate: last candidate.'); if (!this.usetrickle) { //console.log('should send full offer now...'); var init = $iq({to: this.peerjid, type: 'set'}) .c('jingle', {xmlns: 'urn:xmpp:jingle:1', action: this.peerconnection.localDescription.type == 'offer' ? 'session-initiate' : 'session-accept', initiator: this.initiator, sid: this.sid}); this.localSDP = new SDP(this.peerconnection.localDescription.sdp); this.localSDP.toJingle(init, this.initiator == this.me ? 'initiator' : 'responder'); this.connection.sendIQ(init, function () { //console.log('session initiate ack'); var ack = {}; ack.source = 'offer'; $(document).trigger('ack.jingle', [self.sid, ack]); }, function (stanza) { self.state = 'error'; self.peerconnection.close(); var error = ($(stanza).find('error').length) ? { code: $(stanza).find('error').attr('code'), reason: $(stanza).find('error :first')[0].tagName, }:{}; error.source = 'offer'; $(document).trigger('error.jingle', [self.sid, error]); }, 10000); } this.lasticecandidate = true; console.log('Have we encountered any srflx candidates? ' + this.hadstuncandidate); console.log('Have we encountered any relay candidates? ' + this.hadturncandidate); if (!(this.hadstuncandidate || this.hadturncandidate) && this.peerconnection.signalingState != 'closed') { $(document).trigger('nostuncandidates.jingle', [this.sid]); } } }; JingleSession.prototype.sendIceCandidates = function (candidates) { console.log('sendIceCandidates', candidates); var cand = $iq({to: this.peerjid, type: 'set'}) .c('jingle', {xmlns: 'urn:xmpp:jingle:1', action: 'transport-info', initiator: this.initiator, sid: this.sid}); for (var mid = 0; mid < this.localSDP.media.length; mid++) { var cands = candidates.filter(function (el) { return el.sdpMLineIndex == mid; }); if (cands.length > 0) { var ice = SDPUtil.iceparams(this.localSDP.media[mid], this.localSDP.session); ice.xmlns = 'urn:xmpp:jingle:transports:ice-udp:1'; cand.c('content', {creator: this.initiator == this.me ? 'initiator' : 'responder', name: cands[0].sdpMid }).c('transport', ice); for (var i = 0; i < cands.length; i++) { cand.c('candidate', SDPUtil.candidateToJingle(cands[i].candidate)).up(); } // add fingerprint if (SDPUtil.find_line(this.localSDP.media[mid], 'a=fingerprint:', this.localSDP.session)) { var tmp = SDPUtil.parse_fingerprint(SDPUtil.find_line(this.localSDP.media[mid], 'a=fingerprint:', this.localSDP.session)); tmp.required = true; cand.c( 'fingerprint', {xmlns: 'urn:xmpp:jingle:apps:dtls:0'}) .t(tmp.fingerprint); delete tmp.fingerprint; cand.attrs(tmp); cand.up(); } cand.up(); // transport cand.up(); // content } } // might merge last-candidate notification into this, but it is called alot later. See webrtc issue #2340 //console.log('was this the last candidate', this.lasticecandidate); this.connection.sendIQ(cand, function () { var ack = {}; ack.source = 'transportinfo'; $(document).trigger('ack.jingle', [this.sid, ack]); }, function (stanza) { var error = ($(stanza).find('error').length) ? { code: $(stanza).find('error').attr('code'), reason: $(stanza).find('error :first')[0].tagName, }:{}; error.source = 'transportinfo'; $(document).trigger('error.jingle', [this.sid, error]); }, 10000); }; JingleSession.prototype.sendOffer = function () { //console.log('sendOffer...'); var self = this; this.peerconnection.createOffer(function (sdp) { self.createdOffer(sdp); }, function (e) { console.error('createOffer failed', e); }, this.media_constraints ); }; JingleSession.prototype.createdOffer = function (sdp) { //console.log('createdOffer', sdp); var self = this; this.localSDP = new SDP(sdp.sdp); //this.localSDP.mangle(); if (this.usetrickle) { var init = $iq({to: this.peerjid, type: 'set'}) .c('jingle', {xmlns: 'urn:xmpp:jingle:1', action: 'session-initiate', initiator: this.initiator, sid: this.sid}); this.localSDP.toJingle(init, this.initiator == this.me ? 'initiator' : 'responder'); this.connection.sendIQ(init, function () { var ack = {}; ack.source = 'offer'; $(document).trigger('ack.jingle', [self.sid, ack]); }, function (stanza) { self.state = 'error'; self.peerconnection.close(); var error = ($(stanza).find('error').length) ? { code: $(stanza).find('error').attr('code'), reason: $(stanza).find('error :first')[0].tagName, }:{}; error.source = 'offer'; $(document).trigger('error.jingle', [self.sid, error]); }, 10000); } sdp.sdp = this.localSDP.raw; this.peerconnection.setLocalDescription(sdp, function () { $(document).trigger('setLocalDescription.jingle', [self.sid]); //console.log('setLocalDescription success'); }, function (e) { console.error('setLocalDescription failed', e); } ); var cands = SDPUtil.find_lines(this.localSDP.raw, 'a=candidate:'); for (var i = 0; i < cands.length; i++) { var cand = SDPUtil.parse_icecandidate(cands[i]); if (cand.type == 'srflx') { this.hadstuncandidate = true; } else if (cand.type == 'relay') { this.hadturncandidate = true; } } }; JingleSession.prototype.setRemoteDescription = function (elem, desctype) { //console.log('setting remote description... ', desctype); this.remoteSDP = new SDP(''); this.remoteSDP.fromJingle(elem); if (this.peerconnection.remoteDescription !== null) { console.log('setRemoteDescription when remote description is not null, should be pranswer', this.peerconnection.remoteDescription); if (this.peerconnection.remoteDescription.type == 'pranswer') { var pranswer = new SDP(this.peerconnection.remoteDescription.sdp); for (var i = 0; i < pranswer.media.length; i++) { // make sure we have ice ufrag and pwd if (!SDPUtil.find_line(this.remoteSDP.media[i], 'a=ice-ufrag:', this.remoteSDP.session)) { if (SDPUtil.find_line(pranswer.media[i], 'a=ice-ufrag:', pranswer.session)) { this.remoteSDP.media[i] += SDPUtil.find_line(pranswer.media[i], 'a=ice-ufrag:', pranswer.session) + '\r\n'; } else { console.warn('no ice ufrag?'); } if (SDPUtil.find_line(pranswer.media[i], 'a=ice-pwd:', pranswer.session)) { this.remoteSDP.media[i] += SDPUtil.find_line(pranswer.media[i], 'a=ice-pwd:', pranswer.session) + '\r\n'; } else { console.warn('no ice pwd?'); } } // copy over candidates var lines = SDPUtil.find_lines(pranswer.media[i], 'a=candidate:'); for (var j = 0; j < lines.length; j++) { this.remoteSDP.media[i] += lines[j] + '\r\n'; } } this.remoteSDP.raw = this.remoteSDP.session + this.remoteSDP.media.join(''); } } var remotedesc = new RTCSessionDescription({type: desctype, sdp: this.remoteSDP.raw}); this.peerconnection.setRemoteDescription(remotedesc, function () { //console.log('setRemoteDescription success'); }, function (e) { console.error('setRemoteDescription error', e); $(document).trigger('fatalError.jingle', [self, e]); } ); }; JingleSession.prototype.addIceCandidate = function (elem) { var self = this; if (this.peerconnection.signalingState == 'closed') { return; } if (!this.peerconnection.remoteDescription && this.peerconnection.signalingState == 'have-local-offer') { console.log('trickle ice candidate arriving before session accept...'); // create a PRANSWER for setRemoteDescription if (!this.remoteSDP) { var cobbled = 'v=0\r\n' + 'o=- ' + '1923518516' + ' 2 IN IP4 0.0.0.0\r\n' +// FIXME 's=-\r\n' + 't=0 0\r\n'; // first, take some things from the local description for (var i = 0; i < this.localSDP.media.length; i++) { cobbled += SDPUtil.find_line(this.localSDP.media[i], 'm=') + '\r\n'; cobbled += SDPUtil.find_lines(this.localSDP.media[i], 'a=rtpmap:').join('\r\n') + '\r\n'; if (SDPUtil.find_line(this.localSDP.media[i], 'a=mid:')) { cobbled += SDPUtil.find_line(this.localSDP.media[i], 'a=mid:') + '\r\n'; } cobbled += 'a=inactive\r\n'; } this.remoteSDP = new SDP(cobbled); } // then add things like ice and dtls from remote candidate elem.each(function () { for (var i = 0; i < self.remoteSDP.media.length; i++) { if (SDPUtil.find_line(self.remoteSDP.media[i], 'a=mid:' + $(this).attr('name')) || self.remoteSDP.media[i].indexOf('m=' + $(this).attr('name')) === 0) { if (!SDPUtil.find_line(self.remoteSDP.media[i], 'a=ice-ufrag:')) { var tmp = $(this).find('transport'); self.remoteSDP.media[i] += 'a=ice-ufrag:' + tmp.attr('ufrag') + '\r\n'; self.remoteSDP.media[i] += 'a=ice-pwd:' + tmp.attr('pwd') + '\r\n'; tmp = $(this).find('transport>fingerprint'); if (tmp.length) { self.remoteSDP.media[i] += 'a=fingerprint:' + tmp.attr('hash') + ' ' + tmp.text() + '\r\n'; } else { console.log('no dtls fingerprint (webrtc issue #1718?)'); self.remoteSDP.media[i] += 'a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:BAADBAADBAADBAADBAADBAADBAADBAADBAADBAAD\r\n'; } break; } } } }); this.remoteSDP.raw = this.remoteSDP.session + this.remoteSDP.media.join(''); // we need a complete SDP with ice-ufrag/ice-pwd in all parts // this makes the assumption that the PRANSWER is constructed such that the ice-ufrag is in all mediaparts // but it could be in the session part as well. since the code above constructs this sdp this can't happen however var iscomplete = this.remoteSDP.media.filter(function (mediapart) { return SDPUtil.find_line(mediapart, 'a=ice-ufrag:'); }).length == this.remoteSDP.media.length; if (iscomplete) { console.log('setting pranswer'); try { this.peerconnection.setRemoteDescription(new RTCSessionDescription({type: 'pranswer', sdp: this.remoteSDP.raw }), function() { }, function(e) { console.log('setRemoteDescription pranswer failed', e.toString()); }); } catch (e) { console.error('setting pranswer failed', e); } } else { //console.log('not yet setting pranswer'); } } // operate on each content element elem.each(function () { // would love to deactivate this, but firefox still requires it var idx = -1; var i; for (i = 0; i < self.remoteSDP.media.length; i++) { if (SDPUtil.find_line(self.remoteSDP.media[i], 'a=mid:' + $(this).attr('name')) || self.remoteSDP.media[i].indexOf('m=' + $(this).attr('name')) === 0) { idx = i; break; } } if (idx == -1) { // fall back to localdescription for (i = 0; i < self.localSDP.media.length; i++) { if (SDPUtil.find_line(self.localSDP.media[i], 'a=mid:' + $(this).attr('name')) || self.localSDP.media[i].indexOf('m=' + $(this).attr('name')) === 0) { idx = i; break; } } } var name = $(this).attr('name'); // TODO: check ice-pwd and ice-ufrag? $(this).find('transport>candidate').each(function () { var line, candidate; line = SDPUtil.candidateFromJingle(this); candidate = new RTCIceCandidate({sdpMLineIndex: idx, sdpMid: name, candidate: line}); try { self.peerconnection.addIceCandidate(candidate); } catch (e) { console.error('addIceCandidate failed', e.toString(), line); } }); }); }; JingleSession.prototype.sendAnswer = function (provisional) { //console.log('createAnswer', provisional); var self = this; this.peerconnection.createAnswer( function (sdp) { self.createdAnswer(sdp, provisional); }, function (e) { console.error('createAnswer failed', e); }, this.media_constraints ); }; JingleSession.prototype.createdAnswer = function (sdp, provisional) { //console.log('createAnswer callback'); var self = this; this.localSDP = new SDP(sdp.sdp); //this.localSDP.mangle(); var accept = null; this.usepranswer = provisional === true; if (this.usetrickle) { if (!this.usepranswer) { accept = $iq({to: this.peerjid, type: 'set'}) .c('jingle', {xmlns: 'urn:xmpp:jingle:1', action: 'session-accept', initiator: this.initiator, responder: this.responder, sid: this.sid }); var publicLocalDesc = simulcast.reverseTransformLocalDescription(sdp); var publicLocalSDP = new SDP(publicLocalDesc.sdp); publicLocalSDP.toJingle(accept, this.initiator == this.me ? 'initiator' : 'responder'); } else { sdp.type = 'pranswer'; for (var i = 0; i < this.localSDP.media.length; i++) { this.localSDP.media[i] = this.localSDP.media[i].replace('a=sendrecv\r\n', 'a=inactive\r\n'); } this.localSDP.raw = this.localSDP.session + '\r\n' + this.localSDP.media.join(''); } } sdp.sdp = this.localSDP.raw; this.peerconnection.setLocalDescription(sdp, function () { $(document).trigger('setLocalDescription.jingle', [self.sid]); //console.log('setLocalDescription success'); if (accept) { this.connection.sendIQ(accept, function () { var ack = {}; ack.source = 'answer'; $(document).trigger('ack.jingle', [self.sid, ack]); }, function (stanza) { var error = ($(stanza).find('error').length) ? { code: $(stanza).find('error').attr('code'), reason: $(stanza).find('error :first')[0].tagName, }:{}; error.source = 'answer'; error.stanza = stanza; $(document).trigger('error.jingle', [self.sid, error]); }, 10000); } }, function (e) { console.error('setLocalDescription failed', e); } ); var cands = SDPUtil.find_lines(this.localSDP.raw, 'a=candidate:'); for (var j = 0; j < cands.length; j++) { var cand = SDPUtil.parse_icecandidate(cands[j]); if (cand.type == 'srflx') { this.hadstuncandidate = true; } else if (cand.type == 'relay') { this.hadturncandidate = true; } } }; JingleSession.prototype.sendTerminate = function (reason, text) { var self = this, term = $iq({to: this.peerjid, type: 'set'}) .c('jingle', {xmlns: 'urn:xmpp:jingle:1', action: 'session-terminate', initiator: this.initiator, sid: this.sid}) .c('reason') .c(reason || 'success'); if (text) { term.up().c('text').t(text); } this.connection.sendIQ(term, function () { self.peerconnection.close(); self.peerconnection = null; self.terminate(); var ack = {}; ack.source = 'terminate'; $(document).trigger('ack.jingle', [self.sid, ack]); }, function (stanza) { var error = ($(stanza).find('error').length) ? { code: $(stanza).find('error').attr('code'), reason: $(stanza).find('error :first')[0].tagName, }:{}; $(document).trigger('ack.jingle', [self.sid, error]); }, 10000); if (this.statsinterval !== null) { window.clearInterval(this.statsinterval); this.statsinterval = null; } }; JingleSession.prototype.sendMute = function (muted, content) { var info = $iq({to: this.peerjid, type: 'set'}) .c('jingle', {xmlns: 'urn:xmpp:jingle:1', action: 'session-info', initiator: this.initiator, sid: this.sid }); info.c(muted ? 'mute' : 'unmute', {xmlns: 'urn:xmpp:jingle:apps:rtp:info:1'}); info.attrs({'creator': this.me == this.initiator ? 'creator' : 'responder'}); if (content) { info.attrs({'name': content}); } this.connection.send(info); }; JingleSession.prototype.sendRinging = function () { var info = $iq({to: this.peerjid, type: 'set'}) .c('jingle', {xmlns: 'urn:xmpp:jingle:1', action: 'session-info', initiator: this.initiator, sid: this.sid }); info.c('ringing', {xmlns: 'urn:xmpp:jingle:apps:rtp:info:1'}); this.connection.send(info); }; JingleSession.prototype.getStats = function (interval) { var self = this; var recv = {audio: 0, video: 0}; var lost = {audio: 0, video: 0}; var lastrecv = {audio: 0, video: 0}; var lastlost = {audio: 0, video: 0}; var loss = {audio: 0, video: 0}; var delta = {audio: 0, video: 0}; this.statsinterval = window.setInterval(function () { if (self && self.peerconnection && self.peerconnection.getStats) { self.peerconnection.getStats(function (stats) { var results = stats.result(); // TODO: there are so much statistics you can get from this.. for (var i = 0; i < results.length; ++i) { if (results[i].type == 'ssrc') { var packetsrecv = results[i].stat('packetsReceived'); var packetslost = results[i].stat('packetsLost'); if (packetsrecv && packetslost) { packetsrecv = parseInt(packetsrecv, 10); packetslost = parseInt(packetslost, 10); if (results[i].stat('googFrameRateReceived')) { lastlost.video = lost.video; lastrecv.video = recv.video; recv.video = packetsrecv; lost.video = packetslost; } else { lastlost.audio = lost.audio; lastrecv.audio = recv.audio; recv.audio = packetsrecv; lost.audio = packetslost; } } } } delta.audio = recv.audio - lastrecv.audio; delta.video = recv.video - lastrecv.video; loss.audio = (delta.audio > 0) ? Math.ceil(100 * (lost.audio - lastlost.audio) / delta.audio) : 0; loss.video = (delta.video > 0) ? Math.ceil(100 * (lost.video - lastlost.video) / delta.video) : 0; $(document).trigger('packetloss.jingle', [self.sid, loss]); }); } }, interval || 3000); return this.statsinterval; };